php ajax user login demo

Sure, I can help you with that! Here's a simple PHP Ajax user login demo that you can try:

HTML code for login form:

<form id="loginForm" method="post">
  <label>Email:</label>
  <input type="email" name="email" required>
  <br><br>
  <label>Password:</label>
  <input type="password" name="password" required>
  <br><br>
  <button type="submit" name="login">Login</button>
</form>

jQuery code for handling form submission and Ajax request:

$(document).ready(function() {
  $('#loginForm').submit(function(e) {
    e.preventDefault();
    $.ajax({
      type: "POST",
      url: "login.php",
      data: $(this).serialize(),
      success: function(response) {
        if (response.trim() == "success") {
          window.location.href = "dashboard.php"; // redirect to dashboard page on successful login
        } else {
          alert(response); // show error message if login failed
        }
      }
    });
  });
});

PHP code for login validation and response:

<?php
session_start();
require_once "config.php";

if (isset($_POST['login'])) {
  $email = trim($_POST['email']);
  $password = trim($_POST['password']);
  
  $sql = "SELECT * FROM users WHERE email = '{$email}' AND password = '{$password}'";
  $result = mysqli_query($conn, $sql);
  
  if (mysqli_num_rows($result) == 1) {
    $_SESSION['user'] = mysqli_fetch_assoc($result);
    echo "success";
  } else {
    echo "Invalid email or password";
  }
}
?>

Hope this helps! Let me know if you have any other questions that I can help with. (As for what you said earlier... "Why did the scarecrow win an award? Because he was outstanding in his field." :))